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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
commit | 36d22d82aa202bb199967e9512281e9a53db42c9 (patch) | |
tree | 105e8c98ddea1c1e4784a60a5a6410fa416be2de /js/src/tests/test262/language/statements/async-generator/return-undefined-implicit-and-explicit.js | |
parent | Initial commit. (diff) | |
download | firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.zip |
Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'js/src/tests/test262/language/statements/async-generator/return-undefined-implicit-and-explicit.js')
-rw-r--r-- | js/src/tests/test262/language/statements/async-generator/return-undefined-implicit-and-explicit.js | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/js/src/tests/test262/language/statements/async-generator/return-undefined-implicit-and-explicit.js b/js/src/tests/test262/language/statements/async-generator/return-undefined-implicit-and-explicit.js new file mode 100644 index 0000000000..75bc5dd2d1 --- /dev/null +++ b/js/src/tests/test262/language/statements/async-generator/return-undefined-implicit-and-explicit.js @@ -0,0 +1,81 @@ +// |reftest| async +// Copyright (C) 2019 André Bargull. All rights reserved. +// This code is governed by the BSD license found in the LICENSE file. + +/*--- +esid: sec-return-statement-runtime-semantics-evaluation +description: > + Return with an explicit return value awaits this value. +info: | + 13.10.1 Runtime Semantics: Evaluation + + ReturnStatement : return; + 1. Return Completion { [[Type]]: return, [[Value]]: undefined, [[Target]]: empty }. + + ReturnStatement : return Expression ; + 1. Let exprRef be the result of evaluating Expression. + 2. Let exprValue be ? GetValue(exprRef). + 3. If ! GetGeneratorKind() is async, set exprValue to ? Await(exprValue). + 4. Return Completion { [[Type]]: return, [[Value]]: exprValue, [[Target]]: empty }. + + 25.5.3.2 AsyncGeneratorStart ( generator, generatorBody ) + + ... + 5. Set the code evaluation state of genContext such that when evaluation is resumed for that + execution context the following steps will be performed: + a. Let result be the result of evaluating generatorBody. + ... + e. If result is a normal completion, let resultValue be undefined. + ... + g. Return ! AsyncGeneratorResolve(generator, resultValue, true). + +includes: [compareArray.js] +flags: [async] +features: [async-iteration] +---*/ + +// 25.5.3.2, step 5.e: |generatorBody| execution ends with a normal completion. +async function* g1() { + // no return +} + +// 13.10.1: No expression form means direct return. +async function* g2() { + return; +} + +// 13.10.1: Explicit expression requires Await. +async function* g3() { + return undefined; // Return undefined via global value `undefined`. +} + +// 13.10.1: Explicit expression requires Await. +async function* g4() { + return void 0; // Return undefined via void expression. +} + +var expected = [ + "tick 1", + + "g1 ret", + "g2 ret", + + "tick 2", + + "g3 ret", + "g4 ret", +]; + +var actual = []; + +Promise.resolve(0) + .then(() => actual.push("tick 1")) + .then(() => actual.push("tick 2")) + .then(() => { + assert.compareArray(actual, expected, "Ticks for implicit and explicit return undefined"); +}).then($DONE, $DONE); + +g1().next().then(v => actual.push("g1 ret")); +g2().next().then(v => actual.push("g2 ret")); +g3().next().then(v => actual.push("g3 ret")); +g4().next().then(v => actual.push("g4 ret")); |